I’ve recently started doing a lot of development for the iPhone and iPad and I wanted to be able to sketch layouts on paper.

Now it’s one thing to draw a rough iPhone layout, but it’s another to actually have them looking like an iPhone.

I started using the A4 iPhone Template from http://www.uistencils.com, but soon wanted something more photo realistic.

Behold my designs…..
(more…)

It’s very easy to convert PDFs to HTML on Ubuntu.

The command is pdftohtml
(more…)

This is a GlobalSat DG-100

It’s an amazing piece of Kit, but the software that comes with it is absolutely rubbish.

You can download all of the routes (and delete them from the unit) in one simple command with gpsbabel.

gpsbabel -t -i dg-100,erase -o gpx /dev/ttyUSB0 outputfile2.gpx

You’ll still need to set up the times/distance for recording for the switch positions A,B & C. I have mine set to 1,5 and 10 seconds. Easiest way to set these up is on a windows machine with DG Manager.

One of my pet hates on the internet is shopping sites which resize the window when you’re looking at a zoomed in image. Not all of us still use a windowed browser, in fact, most people now use a tabbed one.

Here’s how to stop javascript from taking control of your window size in firefox….
(more…)

To combine two images of the same size with ImageMagick, you simply do the following:

The following will overlay overlay.png on top of output.png

mogrify -draw "image SrcOver 0,0 0,0 'overlay.png'" output.png

While this one will overlay overlay.png on top of input.png and save it as output.png

convert input.png -draw "image SrcOver 0,0 0,0 'overlay.png'" output.png

You can download imagemagick from http://www.imagemagick.org/

Selective colour replacement is easy from the command line with imagemagick.

You can download imagemagick from http://www.imagemagick.org/

The following will replace all red (#FF0000) pixels with blue (#0000FF)

convert sourceimage.png -fill "#FF0000" -opaque "#0000FF" destimage.png

I needed recursively delete folders named .svn within a directory structure.

The following will allow you dto do this from a command prompt:

FOR /F "tokens=*" %G IN ('DIR /B /AD /S .svn') DO RMDIR /S /Q %G

Remember, if you’re doing it from a batch file, you’ll need to double up the percent signs, thus:

FOR /F "tokens=*" %%G IN ('DIR /B /AD /S .svn') DO RMDIR /S /Q %%G

So, you want to set up a write only ftp directory on IIS? One where you can upload files, but not list them?

Easy…
(more…)

I’ve been doing some performance tests on WordPress to see how much of a difference the WordPress Super Cache plugin made.

It turns out that the plugin makes a huge difference. (more…)

So, you’re using sendmail to try and send emails from php/wordpress and it’s not working?

Are your mail logs (/var/log/mail.log) showing nrcpts=0 ??

Make sure the sendmail_path in your php.ini file (/etc/php5/apache2/php.ini) is set up correctly.

It should probably be…

1

sendmail_path = /usr/sbin/sendmail -t -i